Webster's English Dictionary

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penetrate

Cross references:
  1. enter                 
 
pen.e.trate \'pen-*-.tra-t\ vb [L penetratus, pp. of penetrare; akin to L 
   penitus inward, XPenates household gods, Lith peneti to nourish 1a: to pass 
   into or through  1b: to enter by overcoming resistance : PIERCE  2a: to see 
   into or through  2b: to discover the inner contents or meaning of  3: to 
   affect profoundly with feeling  4: to diffuse through : PERMEATE  1a: to 
   pass, extend, pierce, or diffuse into or through something  1b: to pierce 
   something with the eye or mind  2: to affect deeply the senses or feelings